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JPS5744707A - Arrangement for damping vibration of rotor in axial-flow rotary machine - Google Patents

Arrangement for damping vibration of rotor in axial-flow rotary machine

Info

Publication number
JPS5744707A
JPS5744707A JP11978880A JP11978880A JPS5744707A JP S5744707 A JPS5744707 A JP S5744707A JP 11978880 A JP11978880 A JP 11978880A JP 11978880 A JP11978880 A JP 11978880A JP S5744707 A JPS5744707 A JP S5744707A
Authority
JP
Japan
Prior art keywords
rotor
seal fins
axial
rotary machine
work fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11978880A
Other languages
Japanese (ja)
Inventor
Yoshiaki Yamazaki
Kiyoshi Namura
Toshiaki Kobari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11978880A priority Critical patent/JPS5744707A/en
Publication of JPS5744707A publication Critical patent/JPS5744707A/en
Pending legal-status Critical Current

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE: To prevent abnormal vibration of a rotor in an axial-flow rotary machine, by minimizing the change in the flow of leaked work fluid in a circumferential direction through provision of seal fins which are arranged in the manner such that the gaps between each of the seal fins make changes inversely to the spacing between the seal fins and a cover.
CONSTITUTION: Seal fins 7 are attached to the inner wall surface of a stator outer ring 5 that is fixed to a casing. Further, seal fins 9, 10 are fixed to the side wall surface of the stationary outer ring 5 of the stator, in the manner that they project in the axial direction of a rotor and are located nearer to the center of the rotor than the inner faces 6a, 6b of a cover 6 at the opposite axial ends of the same. Resultantly, spacing between the seal fins 7 and seal fins 9, 10 for preventing leakage of work fluid into the main flow from the outer circumferential portion of a rotor blade 2 is increased at one side but decreased at the other side by minute vibration of the rotor. Therefore, it is enabled to minimize leakage of work fluid in the circumferential direction due to minute vibration of the rotor.
COPYRIGHT: (C)1982,JPO&Japio
JP11978880A 1980-09-01 1980-09-01 Arrangement for damping vibration of rotor in axial-flow rotary machine Pending JPS5744707A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11978880A JPS5744707A (en) 1980-09-01 1980-09-01 Arrangement for damping vibration of rotor in axial-flow rotary machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11978880A JPS5744707A (en) 1980-09-01 1980-09-01 Arrangement for damping vibration of rotor in axial-flow rotary machine

Publications (1)

Publication Number Publication Date
JPS5744707A true JPS5744707A (en) 1982-03-13

Family

ID=14770230

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11978880A Pending JPS5744707A (en) 1980-09-01 1980-09-01 Arrangement for damping vibration of rotor in axial-flow rotary machine

Country Status (1)

Country Link
JP (1) JPS5744707A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59184303U (en) * 1983-05-27 1984-12-07 三菱重工業株式会社 Seal structure of turbine blades
JPS6166769A (en) * 1984-09-10 1986-04-05 Sanyo Chem Ind Ltd Binder for printing ink
JPS61225211A (en) * 1985-03-29 1986-10-07 Sanyo Chem Ind Ltd Production of polyureaurethane
US4662820A (en) * 1984-07-10 1987-05-05 Hitachi, Ltd. Turbine stage structure
JPS62220568A (en) * 1986-03-20 1987-09-28 Sanyo Chem Ind Ltd Binder for printing ink
JPS62292874A (en) * 1986-06-12 1987-12-19 Sanyo Chem Ind Ltd Binder for printing ink
DE19619725A1 (en) * 1996-05-15 1997-11-20 Siemens Ag Turbine blade, in particular for a steam turbine
JPH11148308A (en) * 1997-09-19 1999-06-02 Asea Brown Boveri Ag Shroud band for axial-flow turbine
US6508624B2 (en) * 2001-05-02 2003-01-21 Siemens Automotive, Inc. Turbomachine with double-faced rotor-shroud seal structure
DE102009011297A1 (en) * 2009-03-02 2010-09-09 Rolls-Royce Deutschland Ltd & Co Kg Sealing arrangement for turbine of turbo machine, has groove comprising undercuts provided in axial direction, where platform and/or sealing ring comprise sealing element that engages groove and extends in peripheral direction
JP2012132441A (en) * 2010-12-17 2012-07-12 General Electric Co <Ge> Supersonic compressor and method of assembling the same

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59184303U (en) * 1983-05-27 1984-12-07 三菱重工業株式会社 Seal structure of turbine blades
US4662820A (en) * 1984-07-10 1987-05-05 Hitachi, Ltd. Turbine stage structure
JPS6166769A (en) * 1984-09-10 1986-04-05 Sanyo Chem Ind Ltd Binder for printing ink
JPH0543756B2 (en) * 1984-09-10 1993-07-02 Sanyo Chemical Ind Ltd
JPH055242B2 (en) * 1985-03-29 1993-01-21 Sanyo Chemical Ind Ltd
JPS61225211A (en) * 1985-03-29 1986-10-07 Sanyo Chem Ind Ltd Production of polyureaurethane
JPS62220568A (en) * 1986-03-20 1987-09-28 Sanyo Chem Ind Ltd Binder for printing ink
JPH0574623B2 (en) * 1986-03-20 1993-10-18 Sanyo Chemical Ind Ltd
JPS62292874A (en) * 1986-06-12 1987-12-19 Sanyo Chem Ind Ltd Binder for printing ink
JPH0573154B2 (en) * 1986-06-12 1993-10-13 Sanyo Chemical Ind Ltd
DE19619725A1 (en) * 1996-05-15 1997-11-20 Siemens Ag Turbine blade, in particular for a steam turbine
JPH11148308A (en) * 1997-09-19 1999-06-02 Asea Brown Boveri Ag Shroud band for axial-flow turbine
US6508624B2 (en) * 2001-05-02 2003-01-21 Siemens Automotive, Inc. Turbomachine with double-faced rotor-shroud seal structure
DE102009011297A1 (en) * 2009-03-02 2010-09-09 Rolls-Royce Deutschland Ltd & Co Kg Sealing arrangement for turbine of turbo machine, has groove comprising undercuts provided in axial direction, where platform and/or sealing ring comprise sealing element that engages groove and extends in peripheral direction
JP2012132441A (en) * 2010-12-17 2012-07-12 General Electric Co <Ge> Supersonic compressor and method of assembling the same

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